1) Nobody knows exactly why he died. But we think it_______________________an accident.  a) should have been b) can have been c) might have been 2) Sarah looked very happy. She _____________ passed her driving test. a) may have b) could have c) must have 3) I didn't know you were going to Phil's party yesterday. You ___________ told me! a) should have b) can't have c) may have 4) I can't believe Jim hasn't arrived yet. He ___________ taken the wrong train.  a) should have b) can have c) must have 5) You ___________ been ill yesterday. Jessie said you missed her birthday party.  a) must have b) should have c) could have 6) You ___________ paid more attention. Now we are completely lost! a) should have b) may have c) must have 7) The window was broken, so the thieves ___________ got in through that window. a) must have b) should have c) could have

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